def test_single_parameter():
dist_f = MinMaxDistance(measures_to_use=["a"])
abc = MockABC([{"a": -3}, {"a": 3}, {"a": 10}])
dist_f.initialize(0, abc.sample_from_prior, {}, 0)
d = dist_f({"a": 1}, {"a": 2})
assert 1.0 / 13 == d
def test_two_parameters_and_two_used():
dist_f = MinMaxDistance(measures_to_use=["a", "b"])
abc = MockABC([{"a": -3, "b": 2}, {"a": 3, "b": 3}, {"a": 10, "b": 4}])
dist_f.initialize(0, abc.sample_from_prior, {}, 0)
d = dist_f({"a": 1, "b": 10}, {"a": 2, "b": 12})
assert 1.0 / 13 + 2 / 2 == d
def test_two_parameters_but_only_one_used():
dist_f = MinMaxDistance(measures_to_use=["a"])
abc = MockABC([{"a": -3, "b": 2}, {"a": 3, "b": 3}, {"a": 10, "b": 4}])
dist_f.initialize(0, abc.sample_from_prior)
d = dist_f({"a": 1, "b": 10}, {"a": 2, "b": 12})
assert 1 / 13 == d